Hybrid Switched-Inductor Buck PFC Converter for High-Efficiency LED Drivers
Journal
IEEE Transactions on Circuits and Systems II: Express Briefs
Journal Volume
65
Journal Issue
8
Pages
1069 - 1073
Date Issued
2018
Author(s)
Abstract
A hybrid switched-inductor (HS-L) buck topology with a coupled inductor is utilized for power factor correction using clamped current mode control to implement a high-efficiency non-isolated LED driver. Compared to the conventional buck topology, the HS-L buck has lower losses attributed to lower conduction losses in the inductor and diode, and a wider discontinuous conduction mode range. Experimental results verify higher efficiency using the HS-L buck compared to the conventional buck topology, achieving efficiency above 92% and power factor above 0.9 over the universal input range. © 2004-2012 IEEE.
Subjects
clamped current mode control; hybrid switched-inductor buck; LED driver; Power factor correction (PFC)
SDGs
Other Subjects
DC-DC converters; Efficiency; Electric power factor correction; Light emitting diodes; Topology; Coupled inductor; Current Mode Control; Discontinuous conduction mode; Higher efficiency; LED drivers; Lower conduction loss; Power factor corrections; Switched inductors; Electric inductors
Type
journal article